No other price source publishes its measured error
How accurate are our prices, actually?
Every fair value on VaultStore is backtested against realized sales after the fact: did the price we published before the sale land close to what the card actually sold for? This page publishes that measurement directly — mean absolute percentage error (MAPE) and confidence-interval coverage — rather than asking you to trust a marketing claim. See the methodology page for how the underlying fair-value number is computed.
Measured accuracy (30d)
MAPE + CI coverage vs realized salesAccuracy metrics publish here as sample sizes reach the 50-paired-comp floor. No backtested sales have landed in this window yet. This is an honest “not enough data yet,” not a hidden number.
Freshness — how fast are we, really
% of catalog priced within 24h / 72hPriced within 24 hours
0.4%Share of tracked catalog cards refreshed in the last day
Priced within 72 hours
0.4%Share of tracked catalog cards refreshed in the last three days
New-set lag by lane
How long between an upstream set releasing and it showing up here, cataloged and priced — measured where the upstream source publishes a release date at all.
Magic
not measurableTCGCSV's /groups response exposes no release-date field, and TCGdex does not cover this game — the upstream new-set lag cannot be measured for this lane without fabricating a date.
YuGiOh
not measurableTCGCSV's /groups response exposes no release-date field, and TCGdex does not cover this game — the upstream new-set lag cannot be measured for this lane without fabricating a date.
Pokemon
not measurableTCGdex returned no sets with a releaseDate in this locale's summary list.
One Piece Card Game
not measurableTCGCSV's /groups response exposes no release-date field, and TCGdex does not cover this game — the upstream new-set lag cannot be measured for this lane without fabricating a date.
Disney Lorcana
not measurableTCGCSV's /groups response exposes no release-date field, and TCGdex does not cover this game — the upstream new-set lag cannot be measured for this lane without fabricating a date.
Pokemon Japan
not measurableTCGdex returned no sets with a releaseDate in this locale's summary list.
First-party coverage (90d)
How much of the catalog has a real VaultStore transaction behind itCatalog cards with a first-party comp
2 of 70,094Out of the full tracked catalog
What this page will never do
- Publish a MAPE or coverage number below the 50-paired-comp floor.
- Report a lane’s new-set lag as measurable when the upstream source publishes no release date.
- Show operator-only internals — job health, environment flags, or bid-target backlogs stay on the admin surface.
- Fabricate a number when the underlying table is empty. An honest “not enough data yet” beats a fake one.